[Bug target/111814] [SH] __builtin_nan* returns signalling NaNs instead of quiet NaNs and vice versa

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111814

--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jeff Law <l...@gcc.gnu.org>:

https://gcc.gnu.org/g:2a643f55f5acc05dcc7cee133647bf3193d5b563

commit r16-35-g2a643f55f5acc05dcc7cee133647bf3193d5b563
Author: Jiaxun Yang <jiaxun.y...@flygoat.com>
Date:   Sat Apr 19 08:07:58 2025 -0600

    [PATCH v2] sh: Correct NaN signalling bit and propagation rules [PR111814]

    As per architecture, SuperH has a reversed NaN signalling bit
    vs IEEE754-2008, it also has a NaN propgation rule similar to
    MIPS style.

    Use mips style float format and mode for all float types, and
    correct sfp-machine header accordingly.

            PR target/111814

    gcc/ChangeLog:

            * config/sh/sh-modes.def (RESET_FLOAT_FORMAT): Use mips format.
            (FLOAT_MODE): Use mips mode.

    libgcc/ChangeLog:

            * config/sh/sfp-machine.h (_FP_NANFRAC_B): Reverse signaling bit.
            (_FP_NANFRAC_H): Likewise.
            (_FP_NANFRAC_S): Likewise.
            (_FP_NANFRAC_D): Likewise.
            (_FP_NANFRAC_Q): Likewise.
            (_FP_KEEPNANFRACP): Enable for target.
            (_FP_QNANNEGATEDP): Enable for target.
            (_FP_CHOOSENAN): Port from MIPS.

    gcc/testsuite/ChangeLog:

            * gcc.target/sh/pr111814.c: New test.